Here are a couple ideas I came up with off the top of my head that maybe an OK drive ...
1. Hilton Head
2. Grand Canyon
3. Santa Fe, New Mexico
4. Coastal Alabama or Mississippi
5. Williamsburg, VA
6. Other places in TX? Or OK?
7. Branson, MO
Driving trips can be fun if you make the drive part of the fun rather than just a way to get from point a to b. We live in MO and generally take a couple driving trips each year - KC, MO, Chicago, Louisville, KY ... all fairly close to us.